The Wadsworth Constant is the fundamental idea that the true meaning of a video, conversation, or comment approaches importance after approximately 30% of it has been skipped over.

The above definition, for instance, has 180 characters. After applying the Wadsworth Constant, we skip over 52 characters (29%). The definition now reads,
"the true meaning of a video, conversation, or comment approaches importance after approximately 30% of it has been skipped over."

This is a theory by Reddit user Wadsworth stating that the first 30% of content is either irrelevant or not important. The remaining 70% should be perfectly able to provide with as much information as 100%.

This is originally intended for videos, in particular YouTube videos, but the principle should work with many different types of content.

This is simply thought as "skipping the intro".

The first paragraph of this article is 206 characters long with spaces. Using the Wadsworth Constant and removing the first 30% (62 char.) of the text, we end up with the following:

st 30% of content is either irrelevant or not important. The remaining 70% should be perfectly able to provide with as much information as 100%.

If you were looking for a definition for the Wadsworth Constant, this sentence would have been enough for you to understand.